Portion of a golf club head



FIG. 1 is a top plan view of a portion of a golf club head, embodying the inventive design.

FIG. 2 is a top perspective view thereof; and,

FIG. 3 is a heel side elevational view thereof.

The broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The remainder of the golf club head is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a golf club head, as shown and described. 